EP 2438950 A1 20120411 - Drive mechanism for a drug delivery device and drug delivery device
Title (en)
Drive mechanism for a drug delivery device and drug delivery device
Title (de)
Antriebsmechanismus für eine Arzneimittelabgabevorrichtung und Arzneimittelabgabevorrichtung
Title (fr)
Mécanisme de commande pour dispositif d'administration de médicaments et dispositif d'administration de médicaments
Publication
Application
Priority
EP 10186735 A 20101006
Abstract (en)
A lead screw (5), a lead screw nut and a drive member are aligned with an axis (4). A coupling between the lead screw and the lead screw nut allows a helical movement of the lead screw. The drive member is rotationally locked with the lead screw nut. The lead screw is coupled with the drive member to generate a helical movement of the lead screw when the drive member is moved in one axial direction. The coupling is overridden when the drive member is moved in the opposite axial direction. Spline features (25) are arranged on the lead screw in a row (20) parallel to the axis with alternatingly small and large gaps between succeeding spline features. A stop feature of the drive member has a dimension in the direction of the axis which is larger than the small gaps and at most as large as the large gaps.
IPC 8 full level
A61M 5/315 (2006.01); A61M 5/00 (2006.01)
CPC (source: EP)
A61M 5/31555 (2013.01); A61M 5/3156 (2013.01); A61M 5/3158 (2013.01); A61M 5/31593 (2013.01); A61M 5/31515 (2013.01); A61M 2005/2407 (2013.01)
Citation (applicant)
- DE 10237258 B4 20060921 - TECPHARMA LICENSING AG [CH]
- ALFONSO R. GENNARO: "Remington's Pharmaceutical Sciences 17. ed.", 1985, MARK PUBLISHING COMPANY
Citation (search report)
- [XYI] EP 1923085 A1 20080521 - SANOFI AVENTIS DEUTSCHLAND [DE]
- [X] US 2009275914 A1 20091105 - HARMS MICHAEL [DE], et al
- [X] EP 2201972 A1 20100630 - SANOFI AVENTIS DEUTSCHLAND [DE]
- [X] EP 1923084 A1 20080521 - SANOFI AVENTIS DEUTSCHLAND [DE]
- [YA] US 2008071227 A1 20080320 - MOSER ULRICH [CH], et al
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
DOCDB simple family (publication)
DOCDB simple family (application)
EP 10186735 A 20101006